Publications by authors named "Hassan Semaan"
Background: Instrumented posterior lumbar fusion (IPLF) with and without transforaminal interbody fusion (TLIF) is a common treatment for low back pain when conservative interventions have failed. Certain patient comorbidities and lifestyle risk factors, such as obesity and smoking, are known to negatively affect these procedures. An advanced cellular bone allograft (CBA) with viable osteogenic cells (V-CBA) has demonstrated high fusion rates, but the rates for patients with severe and/or multiple comorbidities remain understudied.
View Article and Find Full Text PDFStudy Design: Retrospective cohort study.
Objective: To report the clinical and radiological outcomes for screw track augmentation with fibular allograft in revision of loose pedicle screws associated with significant bone loss along the screw track.
Methods: Thirty consecutive patients, 18 men (60%) and 12 women (40%), with a mean age 52 years (range 34- 68).
Article Synopsis
- The study explored the use of Tc99m MIBI in myocardial perfusion imaging to evaluate cystic duct patency, examining its effectiveness alongside traditional hepatobiliary scintigraphy (HBS).
- Results showed a high agreement rate between MIBI and HBS in diagnosing cystic duct patency, with perfect consistency when tests were performed close together in time.
- This research presents a new approach that could enhance the diagnosis of gallbladder issues, potentially improving patient care and reducing imaging costs associated with acute cholecystitis.
Article Synopsis
- Spondylolisthesis is frequently misdiagnosed on MRI scans, with true alignment often restored in patients lying down, leading to confusion over disc herniation at the affected site.
- A study of 258 patients found that while initial reports indicated a high rate of true disc herniation (41.6%), more accurate evaluations by specialists revealed only 9.3% were actual herniations, highlighting significant overreporting.
- The findings stress the importance of accurate diagnosis in surgical planning, as most identified disc abnormalities were not true herniations but rather pseudo disc issues.
Background Injection of cement during vertebroplasty and kyphoplasty can leak into surrounding structures and could be symptomatic. Purpose To identify the sites and incidence of cement extravasation after kyphoplasty and vertebroplasty, and to evaluate their impacts on clinical outcomes. Material and Methods A retrospective review of 316 patients treated with kyphoplasty and vertebroplasty; 411 cases were included (223 kyphoplasty and 188 vertebroplasty).
View Article and Find Full Text PDFObjectives: To determine the accuracy and non-detection rate of cancer related findings (CRFs) on follow-up non-contrast-enhanced CT (NECT) versus contrast-enhanced CT (CECT) images of the abdomen in patients with a known cancer diagnosis.
Methods: A retrospective review of 352 consecutive CTs of the abdomen performed with and without IV contrast between March 2010 and October 2014 for follow-up of cancer was included. Two radiologists independently assessed the NECT portions of the studies.
Study Design: Retrospective study of a consecutive series of patients undergoing lumbar spine magnetic resonance imaging (MRI) for low back pain at a single institution.
Objective: To determine the prevalence and nondetection rate of incidental extraspinal findings (IESFs) in adult patients undergoing MRI of the lumbar spine performed for low back pain by using a structured approach.
Summary Of Background Data: Extraspinal findings are depicted on lumbar spine magnetic resonance image.
Purpose: To determine the efficacy and safety of transforaminal lumbar interbody fusion (TLIF) for revision lumbar spine surgery in patients with previous laminectomy. The secondary objective was to evaluate the clinical and radiological outcome after such a procedure.
Methods: Retrospective case series study.
Clinical and radiographic evaluation of sagittal imbalance: a new radiographic assessment.
Am J Orthop (Belle Mead NJ)
March 2011
In this article, we describe a case series study involving a new radiologic evaluation of sagittal imbalance. We review the current radiologic assessment of sagittal imbalance and introduce a new radiologic evaluation that helps in ruling out hip flexion contracture as the primary cause of sagittal imbalance and the type and level of spinal osteotomy required to regain sagittal balance. Sagittal imbalance is important in spinal deformity assessment.
View Article and Find Full Text PDFObjective: The purpose of this study was to determine the shape and measurements of the normal distal tibiofibular syndesmosis on computed tomographic scans and to identify features that could aid in the diagnosis of syndesmotic diastasis using computed tomography (CT).
Materials And Methods: CT scans of 100 patients with normal distal tibiofibular syndesmoses were reviewed retrospectively. In 67% the incisura fibularis was deep, giving the syndesmosis a crescent shape.
The diagnosis of nontraumatic intracranial hemorrhage is currently made by computed tomography and is rarely problematic. The causes of bleeding are very numerous. It is important to determine the cause of the hemorrhage promptly, because there may be a recurrence of bleeding.
View Article and Find Full Text PDFObjective: Since the approval of mercaptoacetyltriglycine (MAG3) for routine clinical use, reports have appeared about hepatobiliary excretion deleteriously affecting available diagnostic and quantitative information. The purpose of this study was to evaluate gallbladder (GB) uptake of MAG3 in the clinical setting and its effect on the evaluation of relative renal function and imaging.
Methods: Sixty patients with varying degrees of renal impairment were studied.